Laravel: Set a cookie on successful login using a custom guard/attempt method - laravel

Question

I am using a third party database for authentication. Everything is working great but now would like to set a cookie when a user has logged in.
As stated in the Laravel Docs:
The attempt method will return true if authentication was successful. Otherwise, false will be returned.
This is what I am doing in my controller:
MyLoginController.php
$user = Auth::guard('foo')->attempt(['userid' => $request->username, 'password' => $request->password], $request->remember);
dd($user);
...
return redirect()->intended(route('home'));
Everything here is great. I'm getting true or false back as expected.
What I am trying to do is if the login is successful, set a cookie on the response. I need the user object back to get a value from. Something like this:
MyLoginController.php
$user = Auth::guard('foo')->attempt(['userid' => $request->username, 'password' => $request->password], $request->remember);
if ($user) {
switch (App::environment()) {
case 'local':
$cookie = cookie('localCookieName', $user->token, 480);
break;
case 'development':
$cookie = cookie('devCookieName', $user->token, 480);
break;
case 'production':
$cookie = cookie('cookieName', $user->token, 480);
break;
default:
//
break;
}
return redirect()->intended(route('home'))->cookie($cookie);
}
return redirect()->intended(route('home'));
I am using a custom User Provider to authenticate my users - everything there is working great as well. I am getting the user, and saving any data to my local db if needed. I thought I might be able to just set the cookie in the UserProvider, but without doing ->cookie($cookie) nothing is getting set.
The value of $user->token is coming back from my 3rd party authentication. So that's why I need to be able to access that value.
Reading the docs, it looks like I need to be setting cookie(s) on the response ->cookie($cookie) or withCookies($cookies).
This leads me to believe I need to set the cookie on my controller, but I'm not sure how to get the user object back since the attempt method only returns true or false.
How can I get the user object from within the attempt method? Maybe I am making thins incredibly difficult for myself and there is an easier way to set the cookie?
Thank you for any suggestions!
EDIT
Here is my config/auth.php file:
...
'guards' => [
'web' => [
'driver' => 'session',
'provider' => 'users',
],
'api' => [
'driver' => 'token',
'provider' => 'users',
'hash' => false,
],
'foo' => [
'driver' => 'session',
'provider' => 'foo',
],
],
...
'providers' => [
'users' => [
'driver' => 'eloquent',
'model' => App\User::class,
],
'foo' => [
'driver' => 'foo', // Using a 3rd party for auth.
'model' => App\MyUser::class, // User model for auth.
],
// 'users' => [
// 'driver' => 'database',
// 'table' => 'users',
// ],
],

Answer 1

attempt does a login if the credentials are valid and correct for a User. So you can just get the user from the Request or the Auth guard, since they are logged in:
$user = $request->user();
$user = $request->auth('foo')->user();
$user = Auth::guard('foo')->user();
...
If you know that attempt passed, the User is also available via getLastAttempted on the session guard:
$user = Auth::guard('foo')->getLastAttempted();
Although you can use that I would not, as you have to check that attempt actually returned true before trusting this value. This holds the last user retrieved by credentials, which could not have been authenticated potentially, attempt returned false.
You do not have to directly be adding a cookie to the Response. In the Cookie section of the docs should be information about "queue"ing a cookie to automatically be attached to the outgoing Response:
Cookie::queue('name', 'value', $minutes);
Laravel 6.x Docs - Responses - Attaching Cookies to Responses